Of course. Thanks Mary Anne for following up so quickly. Try testing this link or almost any listing page on this site (not category pages):
http://www.subscribedublin.com/listing/dublin-event-guide-for-free-events/
UPDATE: I do not know if it is the sitemap feature specifically but now I’m seeing the “Session Expired” re-login popup after previewing a new post that is not yet published. My “Edit” post page is using HTTPS but when I click on the “Preview” button, the post preview opens without SSL encryption.
Perhaps there is something loading as part of the SEO Toolbar that causes WordPress to logout since there is a mismatch of HTTP and HTTPS. Does that make any sense?
Thanks for any feedback and advice you can share!